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BUCHANAN, N.Y. -- Entergy said Wednesday that follow up groundwater tests at the Indian Point Nuclear Power Plant in Buchanan confirm anticipated fluctuations in tritium levels pose no threat to public health or safety.

The most recent samples from onsite groundwater monitoring wells show elevated levels of tritium from the first readings – with the highest concentration rising by about 80 percent, fluctuations that can be expected as the material migrates.

Even with the new readings, there is no impact to public health or safety, and although these values remain less than one-tenth of one percent of federal reporting guidelines, Entergy said, adding it made voluntary notification to the Nuclear Regulatory Commission, state agencies and other key stakeholders, Entergy said.

Workers are inspecting the pump and drainage systems associated with those recent preparations, which were completed in January, to determine the most likely pathway for that water to have reached the ground. Tritium is a weak radioactive isotope of hydrogen, Entergy said.